Display substrate and display device

ABSTRACT

A display substrate and a display device are provided. In the display substrate, each of the plurality of anode groups includes a first anode and a second anode, the first anode includes a first main body portion, a first connection portion, an extension portion and an anode compensation portion, an orthographic projection of the anode compensation portion on the base substrate covers one thin film transistor, the anode compensation portion has a first point at a side away from the second center line, and the first main body portion has a second point at the first side, the first anode and a connection line between the first point and the second point enclose a notch region, and an area of the notch region is greater than at least one of an area of the anode compensation portion and an area of the first connection portion.

The present application claims the priority of the PCT PatentApplication No. PCT/CN2020/086997, filed on Apr. 26, 2020, for allpurposes, the disclosure of which is incorporated herein by reference inits entirety as part of the present application.

TECHNICAL FIELD

Embodiments of the present disclosure relate to a display substrate anda display device.

BACKGROUND

With the continuous development of display technology, organiclight-emitting diode (OLED) display technology has been increasinglyused in various electronic devices because of its advantages ofself-illumination, wide viewing angle, wide color gamut, high contrast,low power consumption and high reaction speed.

On the other hand, with the continuous development of organiclight-emitting diode display technology, people put forward higherrequirements for the performance of organic light-emitting diode displayproducts such as power consumption, color cast, brightness andstability.

SUMMARY

Embodiments of the present disclosure provide a display substrate and adisplay device. The display substrate includes: a base substrate; apixel circuit layer on the base substrate; an anode layer located at aside of the pixel circuit layer away from the base substrate. The pixelcircuit layer includes a plurality of pixel driving circuits, the anodelayer includes a plurality of anodes, the plurality of pixel drivingcircuits are arranged in one-to-one correspondence with the plurality ofanodes, the plurality of anodes include a plurality of anode groupsarranged in an array along a first direction and a second direction,each of the plurality of anode groups includes a first anode and asecond anode which are oppositely arranged in the second direction. Thefirst anode includes a first main body portion and a first connectionportion, and the first connection portion is electrically connected to apixel driving circuit corresponding to the first anode. The first anodealso includes an extension portion and an anode compensation portion,the orthographic projection of the anode compensation portion on thebase substrate covers one thin film transistor in the pixel drivingcircuit connected to the first connection portion, the first main bodyportion and the anode compensation portion at least partially overlap inthe first direction, the first center line of the anode compensationportion extending in the second direction is located at a first side ofthe second center line of the first main body portion extending in thesecond direction. The anode compensation portion has a first point at aside away from the second center line, and the first main body portionhas a second point at the first side, and the first anode and aconnection line between the first point and the second point enclose anotch region, and the area of the notch region is greater than at leastone of the area of the anode compensation portion and the area of thefirst connection portion. According to the display substrate, the shapeof the first anode is designed, so that the extension portion of thefirst anode avoids the light transmitting region of the displaysubstrate as much as possible, thereby improving the light transmittanceof the display substrate.

At least one embodiment of the present disclosure provides a displaysubstrate, which includes: a base substrate; a pixel circuit layer, onthe base substrate; an anode layer, at a side of the pixel circuit layeraway from the base substrate, wherein the pixel circuit layer includes aplurality of pixel driving circuits, the anode layer includes aplurality of anodes, and the plurality of pixel driving circuits arearranged in one-to-one correspondence with the plurality of anodes, theplurality of anodes include a plurality of anode groups arranged in anarray along a first direction and a second direction, each of theplurality of anode groups includes a first anode and a second anodewhich are oppositely arranged in the second direction, the first anodeincludes a first main body portion and a first connection portion, andthe first connection portion is electrically connected to a pixeldriving circuit corresponding to the first anode, the first anodefurther includes an extension portion and an anode compensation portion,wherein an orthographic projection of the anode compensation portion onthe base substrate covers one thin film transistor in the pixel drivingcircuit connected to the first connection portion, the first main bodyportion and the anode compensation portion at least partially overlap inthe first direction, a first center line of the anode compensationportion extending in the second direction is at a first side of a secondcenter line of the first main body portion extending in the seconddirection, the anode compensation portion has a first point at a sideaway from the second center line, and the first main body portion has asecond point at the first side, the first anode and a connection linebetween the first point and the second point enclose a notch region, andan area of the notch region is greater than at least one of an area ofthe anode compensation portion and an area of the first connectionportion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the area of the notch region is greater than a sumof the area of the anode compensation portion and the area of the firstconnection portion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the anode compensation portion is at the first sideof the second center line of the first main body portion extending inthe second direction.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the extension portion includes a first extensionportion and a second extension portion, the first extension portion isat a side of the first connection portion away from the first main bodyportion, the second extension portion is respectively connected to thefirst extension portion and the anode compensation portion, and thefirst extension portion is at a side of the second extension portionaway from the anode compensation portion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, a third center line of the first extension portionextending in the second direction is at a second side of the secondcenter line of the first main body portion extending in the seconddirection, and the second side is opposite to the first side.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the first extension portion is at the second side ofthe second center line of the first main body portion extending in thesecond direction.

For example, in the display substrate provided by an embodiment of thepresent disclosure, an orthographic projection of the notch region onthe base substrate does not overlap with an orthographic projection ofthe first anode on the base substrate.

For example, in the display substrate provided by an embodiment of thepresent disclosure, a fourth center line of the first connection portionextending in the second direction is at the first side of the secondcenter line of the first main body portion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, each of the plurality of pixel driving circuitsincludes a driving thin film transistor and a compensation thin filmtransistor, a drain electrode of the driving thin film transistor and asource electrode of the compensation thin film transistor are connectedto a first node, an orthographic projection of the anode compensationportion on the base substrate covers the first node of a pixel drivingcircuit connected to the first connection portion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, a size of the first connection portion in the firstdirection is smaller than a size of the first main body portion in thefirst direction, and a size of the first extension portion in the firstdirection is smaller than a size of the first connection portion in thefirst direction.

For example, in the display substrate provided by an embodiment of thepresent disclosure, each of the plurality of anode groups furtherincludes a third anode and a fourth anode; in each of the plurality ofanode groups, the first anode and the second anode form an anode pair,the third anode, the anode pair and the fourth anode are arranged insequence in the first direction, and the first anode and the secondanode are arranged in sequence in the second direction.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the notch region includes a first notch between thefirst main body portion and the anode compensation portion, anorthographic projection of the first notch on the base substrateincludes a first edge and a second edge extending in the seconddirection, the first edge is connected to an orthographic projection ofthe first connection portion on the base substrate, and the second edgeis on a connection line between the first point and the second point.

For example, in the display substrate provided by an embodiment of thepresent disclosure, an area of the orthographic projection of the firstnotch on the base substrate is greater than ½ of an area of theorthographic projection of the first connection portion on the basesubstrate.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the notch region further includes a second notchbetween the first notch and the anode compensation portion, anorthographic projection of the second notch on the base substrateincludes a fourth edge and a fifth edge extending in the seconddirection, the fourth edge is connected to an orthographic projection ofthe first extension portion on the base substrate, and the fifth edge isalso on the connection line between the first point and the secondpoint.

For example, in the display substrate provided by an embodiment of thepresent disclosure, an area of the orthographic projection of the secondnotch on the base substrate is greater than ½ of an area of theorthographic projection of the first connection portion on the basesubstrate.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the second anode includes a second main body portionand a second connection portion, the second main body portion iselectrically connected to a pixel driving circuit corresponding to thesecond anode, and an orthographic projection of the second main bodyportion on the base substrate covers a first node of the pixel drivingcircuit electrically connected to the second connection portion, thefirst connection portion and the second connection portion aresymmetrically arranged about a symmetry axis parallel to the firstdirection, wherein the first connection portion is at a side of thefirst main body portion away from the second main body portion, and thesecond connection portion is at a side of the second main body portionaway from the first main body portion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the second anode further includes a firstsupplementary portion, the first supplementary portion is protruded fromthe second main body portion in a direction the second main body portionclose to the first anode, an orthographic projection of the firstsupplementary portion on the base substrate at least partially overlapswith an orthographic projection of a channel region of the compensationthin film transistor in the pixel driving circuit electrically connectedto the second connection portion on the base substrate.

For example, in the display substrate provided by an embodiment of thepresent disclosure, each of the plurality of pixel driving circuitsfurther includes a storage capacitor and a light-emitting control line,the storage capacitor includes a first electrode plate and a secondelectrode plate arranged in a direction perpendicular to the basesubstrate, the first main body portion is at a side of thelight-emitting control line in the pixel driving circuit connected tothe first connection portion away from the storage capacitor, and theanode compensation portion is at a side of the light-emitting controlline away from the first main body portion.

For example, in the display substrate provided by an embodiment of thepresent disclosure, each of the plurality of pixel driving circuitsfurther includes a data line and a power line, in each of the pluralityof pixel driving circuits, an orthographic projection of the secondelectrode plate on the base substrate, an orthographic projection of thelight-emitting control line on the base substrate, the data line and thepower line enclose a first interval region, and an area of the firstinterval region covered by an orthographic projection of the firstextension portion on the base substrate is smaller than ½ of a totalarea of the first interval region.

For example, in the display substrate provided by an embodiment of thepresent disclosure, each of the plurality of pixel driving circuitsfurther includes an initialization signal line, an orthographicprojection of the light-emitting control line in a pixel driving circuitcorresponding to the first anode on the base substrate, an orthographicprojection of the initialization signal line in a pixel driving circuitcorresponding to the second anode on the base substrate, the data lineand the power line enclose a second interval region, and an area of thesecond interval region covered by an orthographic projection of thefirst anode on the base substrate is smaller than ⅔ of a total area ofthe second interval region.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the third anode includes a third main body portionand a third connection portion, and the third connection portion iselectrically connected to a pixel driving circuit corresponding to thethird anode; the fourth anode includes a fourth main body portion and afourth connection portion, and the fourth connection portion iselectrically connected to a pixel driving circuit corresponding to thefourth anode.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the fourth anode further includes a secondsupplementary portion protruding from the fourth main body portion in adirection the fourth main body portion close to the second anode, anorthographic projection of the second supplementary portion on the basesubstrate at least partially overlaps with an orthographic projection ofa channel region of the compensation thin film transistor in the pixeldriving circuit electrically connected to the third connection portionon the base substrate.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the fourth anode further includes a thirdsupplementary portion protruding from the fourth main body portion in adirection the fourth main body portion away from the second anode, anorthographic projection of the third supplementary portion on the basesubstrate at least partially overlaps with an orthographic projection ofa channel region of the compensation thin film transistor in the pixeldriving circuit electrically connected to the first connection portionon the base substrate.

For example, the display substrate provided by an embodiment of thepresent disclosure further includes a pixel defining layer at a side ofthe anode layer away from the base substrate; and a light-emitting layerat a side of the anode layer away from the base substrate, wherein thepixel defining layer includes a plurality of openings, the plurality ofopenings are arranged in one-to-one correspondence with the plurality ofanodes, and each of the plurality of openings partially exposes acorresponding anode of the plurality of anodes, the light-emitting layerincludes a plurality of light-emitting portions, the plurality oflight-emitting portions are arranged in one-to-one correspondence withthe plurality of openings, and at least a part of each of the pluralityof light-emitting portions is in a corresponding one of the plurality ofopening and covers an exposed part of a corresponding anode of theplurality of anodes.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the plurality of openings are divided into aplurality of opening groups, each of the plurality of opening groupsincludes a first opening and a second opening, and the plurality oflight-emitting portions are divided into a plurality of light-emittingportion groups, each of the plurality of light-emitting portion groupsincludes a first light-emitting portion and a second light-emittingportion, an orthographic projection of the first opening on the basesubstrate falls within an orthographic projection of the first main bodyportion on the base substrate, at least a part of the firstlight-emitting portion is in the first opening and covers an exposedpart of the first main body portion, and a shape of the orthographicprojection of the first main body portion on the base substrate issimilar to a shape of the orthographic projection of the first openingon the base substrate.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the pixel circuit layer includes: a semiconductorlayer on the base substrate; and a first gate electrode layer at a sideof the semiconductor layer away from the base substrate, wherein thesemiconductor layer includes a plurality of pixel driving units whichare arranged in one-to-one correspondence with the anodes, each of theplurality of pixel driving units includes a first unit, a second unit, athird unit, a fourth unit, a fifth unit, a sixth unit and a seventhunit, the first unit includes a first channel region, and a first sourceregion and a first drain region at two sides of the first channelregion, the second unit includes a second channel region, and a secondsource region and a second drain region at two sides of the secondchannel region, the third unit includes a third channel region, and athird source region and a third drain region at two sides of the thirdchannel region, the fourth unit comprises a fourth channel region, and afourth source region and a fourth drain region at two sides of thefourth channel region, the fifth unit includes a fifth channel region,and a fifth source region and a fifth drain region at two sides of thefifth channel region, the sixth unit includes a sixth channel region,and a sixth source region and a sixth drain region at two sides of thesixth channel region, the seventh unit includes a seventh channelregion, and a seventh source region and a seventh drain region at twosides of the seventh channel region, the third source region, the firstdrain region and the fifth source region are connected to the firstnode, the sixth drain region is connected to the third drain region, thefirst source region, the second drain region and the fourth drain regionare connected to the second node, the fifth drain region is connected tothe seventh drain region, the first gate electrode layer includes areset signal line, a gate line, a first electrode block and alight-emitting control line, wherein the reset signal line overlaps withthe seventh channel region and the sixth channel region to form aseventh thin film transistor and a sixth thin film transistor with theseventh unit and the sixth unit, and the gate line respectively overlapswith the third channel region and the second channel region to form athird thin film transistor and a second thin film transistor with thethird unit and the second unit, the first electrode block overlaps withthe first channel region to form a first thin film transistor with thefirst unit, and the light-emitting control line overlaps with the fourthchannel region and the fifth channel region to form a fourth thin filmtransistor and a fifth thin film transistor with the fourth unit and thefifth unit, the first thin film transistor is the driving thin filmtransistor, and the third thin film transistor is the compensation thinfilm transistor.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the reset signal line, the gate line and thelight-emitting control line all extend in the first direction, and thereset signal line, the gate line, the first electrode block and thelight-emitting control line are arranged in the second direction.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the pixel circuit layer includes: a second gateelectrode layer at a side of the first gate electrode layer away fromthe semiconductor layer; wherein the second gate electrode layerincludes an initialization signal line and a second electrode block, theinitialization signal line is connected to the seventh source region andthe sixth source region, and an orthographic projection of the secondelectrode block on the base substrate at least partially overlaps withan orthographic projection of the first electrode block on the basesubstrate to form a storage capacitor.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the pixel circuit layer further includes: asource-drain electrode layer at a side of the second gate electrodelayer away from the first gate electrode layer, wherein the source-drainelectrode layer includes the data line and the power line, the secondsource region is connected to the data line, and the fourth sourceregion is connected to the power line.

For example, in the display substrate provided by an embodiment of thepresent disclosure, the source-drain electrode layer further includes: aconnection block including a first end and a second end, the first endis connected to the drain region of the compensation thin filmtransistor, and the second end is connected to the first electrodeblock, wherein an orthographic projection of the anode compensationportion on the base substrate covers an orthographic projection of thesecond end on the base substrate.

At least one embodiment of the present disclosure further provides adisplay device comprising any one of the display substrates as describedabove.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of theembodiments of the present disclosure, the drawings of the embodimentswill be briefly described in the following. It is obvious that thedescribed drawings below are only related to some embodiments of thepresent disclosure without constituting any limitation thereto.

FIG. 1 is a schematic plan view of a display substrate according to anembodiment of the present disclosure;

FIG. 2 is a schematic section view of a display substrate along thecutting line A-A in FIG. 1 according to an embodiment of the presentdisclosure;

FIG. 3A is a schematic plan view of an anode layer in a displaysubstrate according to an embodiment of the present disclosure;

FIG. 3B is a schematic plan view of a first anode and a second anode ina display substrate according to an embodiment of the presentdisclosure;

FIG. 3C is a schematic plan view of an anode layer in another displaysubstrate according to an embodiment of the present disclosure;

FIGS. 4A-4D are schematic plan views of each functional film layer in adisplay substrate according to an embodiment of the present disclosure;

FIG. 5 is an equivalent circuit diagram of a pixel driving circuit in adisplay substrate according to an embodiment of the present disclosure;

FIG. 6 is a schematic plan view of another display substrate accordingto an embodiment of the present disclosure; and

FIG. 7 is a schematic diagram of a display device according to anembodiment of the present disclosure.

DETAILED DESCRIPTION

In order to make objectives, technical details and advantages of theembodiments of the present disclosure more clearly, the technicalsolutions of the embodiments will be described in a clearly and fullyunderstandable way in connection with the drawings related to theembodiments of the present disclosure. Apparently, the describedembodiments are just a part but not all of the embodiments of thepresent disclosure. Based on the described embodiments herein, thoseskilled in the art can obtain other embodiment(s), without any inventivework, which should be within the scope of the present disclosure.

Unless otherwise defined, all the technical and scientific terms usedherein have the same meanings as commonly understood by one of ordinaryskill in the art to which the present disclosure belongs. The terms“first,” “second,” etc., which are used in the present disclosure, arenot intended to indicate any sequence, amount or importance, butdistinguish various components. Also, the terms “include,” “including,”“include,” “including,” etc., are intended to specify that the elementsor the objects stated before these terms encompass the elements or theobjects and equivalents thereof listed after these terms, but do notpreclude the other elements or objects.

With the popularization and application of organic light-emitting diodedisplay panels, the requirements for light transmittance of organiclight-emitting diode display panels are getting higher and higher. Howto improve the light transmittance of organic light-emitting diodedisplay panel has become an urgent problem to be solved.

Embodiments of the present disclosure provide a display substrate and adisplay device. The display substrate includes: a base substrate; apixel circuit layer on the base substrate; an anode layer located at aside of the pixel circuit layer away from the base substrate. The pixelcircuit layer includes a plurality of pixel driving circuits, the anodelayer includes a plurality of anodes, the plurality of pixel drivingcircuits are arranged in one-to-one correspondence with the plurality ofanodes, the plurality of anodes include a plurality of anode groupsarranged in an array along a first direction and a second direction,each of the plurality of anode groups includes a first anode and asecond anode which are oppositely arranged in the second direction. Thefirst anode includes a first main body portion and a first connectionportion, and the first connection portion is electrically connected to apixel driving circuit corresponding to the first anode. The first anodealso includes an extension portion and an anode compensation portion, anorthographic projection of the anode compensation portion on the basesubstrate covers one thin film transistor in the pixel driving circuitconnected to the first connection portion, the first main body portionand the anode compensation portion at least partially overlap in thefirst direction, a first center line of the anode compensation portionextending in the second direction is located at a first side of a secondcenter line of the first main body portion extending in the seconddirection. The anode compensation portion has a first point at a sideaway from the second center line, and the first main body portion has asecond point at the first side, and the first anode and a connectionline between the first point and the second point enclose a notchregion, and an area of the notch region is greater than at least one ofan area of the anode compensation portion and an area of the firstconnection portion. According to the display substrate, the shape of thefirst anode is designed, so that the extension portion of the firstanode avoids the light transmitting region of the display substrate asmuch as possible, thereby improving the light transmittance of thedisplay substrate.

Next, the display substrate and the display device provided by theembodiment of the present disclosure will be described in detail withreference to the drawings.

FIG. 1 is a schematic plan view of a display substrate according to anembodiment of the present disclosure; FIG. 2 is a schematic section viewof a display substrate along the cutting line A-A in FIG. 1 according toan embodiment of the present disclosure; FIG. 3A is a schematic planview of an anode layer in a display substrate according to an embodimentof the present disclosure; FIG. 3B is a schematic plan view of a firstanode and a second anode in a display substrate according to anembodiment of the present disclosure.

As illustrated in FIGS. 1, 2 and 3A, the display substrate 100 includesa base substrate 110, a pixel circuit layer 210 and an anode layer 170.The pixel circuit layer 210 is arranged on the base substrate 110, andthe anode layer 170 is arranged at a side of the pixel circuit layer 210away from the base substrate. The pixel circuit layer 210 includes aplurality of pixel driving circuits 215, and the anode layer 170includes a plurality of anodes 175, the plurality of pixel drivingcircuits 215 and the plurality of anodes 175 are arranged in one-to-onecorrespondence, that is, one pixel driving circuit 215 corresponds toone anode 175 and is electrically connected to the corresponding anode175 to provide the corresponding anode 175 with an electrical signal fordriving the sub-pixel to emit light.

As illustrated in FIG. 1 and FIG. 3A, the plurality of anodes 175include a plurality of anode groups 1750 arranged in an array along afirst direction and a second direction, and each anode group 1750includes a first anode 1751 and a second anode 1752 which are oppositelyarranged. The first anode 1751 includes a first main body portion 1751Aand a first connection portion 1751B, the first connection portion 1751Bis electrically connected to the pixel driving circuit 215 correspondingto the first anode 1751, so that the pixel driving circuit 215 can applyan electrical signal driving the sub-pixel to the first anode 1751including the first main body portion 1751A to emit light through thefirst connection portion 1751B.

As illustrated in FIG. 1, FIG. 3A and FIG. 3B, the first anode 1751 alsoincludes an extension portion 1751F and an anode compensation portion1751E. An orthographic projection of the anode compensation portion1751E on the base substrate 110 covers one thin film transistor in apixel driving circuit 215 connected to the first connection portion1751B, the first main body portion 1751A and the anode compensationportion 1751E at least partially overlap in the first direction. A firstcenter line 701 of the anode compensation portion 1751E extending in thesecond direction is located at a first side of a second center line 702of the first main body portion 1751A extending in the second direction,the anode compensation portion 1751E has a first point P1 on a side awayfrom the second center line 702, and the first main body portion 1751Ahas a second point P2 at the first side. The first anode 1751 and aconnection line P12 between the first point P1 and the second point P2enclose a notch region 450, and the area of the notch region 450 isgreater than at least one of the area of the anode compensation portion1751E and the area of the first connection portion 1751B.

In the display substrate provided by the embodiment of the presentdisclosure, the extension portion is used for connecting the anodecompensation portion with the first connection portion; the first centerline of the anode compensation portion extending in the second directionis located at the first side of the second center line of the first mainbody portion extending in the second direction, and the area of thenotch region is greater than at least one of the area of the anodecompensation portion and the area of the first connection portion, sothat an overlapping area of the extension portion and the lighttransmitting region of the pixel driving circuit can be reduced.Therefore, the design of the first anode can make the extension portionof the first anode avoid the light transmitting region of the displaysubstrate as much as possible, thereby improving the light transmittanceof the display substrate. Because the display substrate has high lighttransmittance, a photosensitive device such as a camera and afingerprint recognition module can be arranged below the displaysubstrate.

In some examples, as illustrated in FIGS. 1 and 3A, in the notch region450, the transmittances of at least two of all film layers between thebase substrate 110 and the anode layer 170 of the display substrate aregreater than 90%.

In some examples, as illustrated in FIGS. 1 and 3A, the area of thenotch region 450 is greater than the sum of the area of the anodecompensation portion 1751E and the area of the first connection portion1751B. Therefore, the display substrate can further reduce theoverlapping area of the extension portion and the light transmittingregion of the pixel driving circuit, thereby further improving the lighttransmittance of the display substrate.

In some examples, as illustrated in FIGS. 1 and 3A, the anodecompensation portion 1751E is located at the first side of the secondcenter line of the first main body portion 1751A extending in the seconddirection. That is, the anode compensation portion 1751E is totallylocated at the first side of the second center line of the first mainbody portion 1751A extending in the second direction.

In some examples, as illustrated in FIGS. 1 and 3A, the orthographicprojection of the notch region 450 on the base substrate 110 does notoverlap with the orthographic projection of the first anode 1751 on thebase substrate 110. That is, the notch region 450 does not belong to thefirst anode, but is a region surrounded by the first anode and theconnection line P12 between the first point P1 and the second point P2.

In some examples, as illustrated in FIGS. 1, 3A and 3B, the distancebetween the first center line 701 of the anode compensation portion1751E and the second center line 702 of the first main body portion1751A is greater than or equal to ½ of the width of the anodecompensation portion 1751E in the first direction.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, afourth center line 704 of the first connection portion 1751B extendingin the second direction approximately coincides with the second centerline 702 of the first main body portion 1751A. It should be noted thatdue to the limitation of process accuracy, the above-mentioned“approximately coincident” includes a case where the fourth center lineand the second center line completely coincide, and also includes a casewhere the distance between the fourth center line and the second centerline is less than 1/10 of the width of the first connection portion inthe first direction. Of course, the embodiments of the presentdisclosure include but are not limited thereto, and the fourth centerline of the first connection portion extending in the second directioncan also be located at the first side of the first main body portion.

FIG. 3C is a schematic plan view of an anode layer in another displaysubstrate according to an embodiment of the present disclosure. Asillustrated in FIG. 3C, a fourth center line 704 of the first connectionportion 1751B extending in the second direction of the first anode 1751is also located at the first side of the second center line 702 of thefirst main body portion 1751A extending in the second direction. Thatis, the fourth center line 704 and the first center line 701 of theanode compensation portion 1751E extending in the second direction arelocated on the same side of the second center line 702.

For example, the fourth center line 704 of the first connection portion1751B is located at the side of the first center line 701 away from thesecond center line 702. Therefore, the first anode can make the firstconnection portion avoid the light transmitting region of the displaysubstrate as much as possible, thereby further improving the lighttransmittance of the display substrate.

In some examples, as illustrated in FIG. 1, each pixel driving circuit215 includes a driving thin film transistor T1 and a compensation thinfilm transistor T3, and a drain electrode D1 of the driving thin filmtransistor T1 and a source electrode S3 of the compensation thin filmtransistor T3 are connected to a first node N1. An orthographicprojection of the anode compensation portion 1751E on the base substrate110 covers the first node N1 of the pixel driving circuit 215 connectedto the first connection portion 1751B, that is, the orthographicprojection of the anode compensation portion 1751E on the base substrate110 at least partially overlaps with the orthographic projection of thefirst node N1 of the pixel driving circuit 215 connected to the firstconnection portion 1751B on the base substrate 110. Because of the pixelarrangement structure, the shape and size of the first anode and thesecond anode etc., the first anode 1751 and the second anode 1752, whichbelong to the same anode pair 1758, are configured to drive sub-pixelsto emit light of the same color. Because the main body portion of thesecond anode 1752 covers the first node N1 of the corresponding pixeldriving circuit 215, the first main body portion 1751A does not coverthe first node N1 of the corresponding pixel driving circuit 215, theanode compensation portion 1751E described above is added to the firstanode 1751, and the orthographic projection of the anode compensationportion 1751E on the base substrate 110 covers the first node N1 of thepixel driving circuit 215 connected to the first connection portion1751B, so that the load between the first anode 1751 and thecorresponding first node N1 can be balanced with the load between thesecond anode 1752 and the corresponding first node N1, and thus thedisplay quality can be improved.

In some examples, as illustrated in FIG. 1, the extension portion 1751Ffurther includes a first extension portion 1751C and a second extensionportion 1751D, the first extension portion 1751C is at a side of thefirst connection portion 1751B away from the first main bodyportion1751A, the second extension portion 1751D is respectivelyconnected to the first extension portion 1751C and the anodecompensation portion1751E, and the first extension portion 1751C is at aside of the second extension portion 1751D away from the anodecompensation portion1751E. Therefore, the first extension portion islocated at the side of the first connection portion away from the firstmain body portion, and in this case, the first extension portion extendsfrom the first connection portion instead of the first main bodyportion, so that the area of the first anode can be reduced. Inaddition, the first extension portion is located at the side of thesecond extension portion away from the anode compensation portion, sothat the first extension portion is closer to the edge of thecorresponding pixel driving circuit, and the overlapping area betweenthe first extension portion and the light transmitting region of thepixel driving circuit is reduced. Therefore, the design of the firstanode can make the first extension portion and the second extensionportion of the first anode avoid the light transmitting region of thedisplay substrate as much as possible, thereby improving the lighttransmittance of the display substrate.

For example, as illustrated in FIG. 1 and FIG. 2, the first node N1 canbe a connection block 1542 arranged in the same layer as a data line 152and a power line 151 in the pixel driving circuit 215. The specificsetting of the connection block 1542 will be described in detail in thefollowing layout schematic diagrams.

In some examples, as illustrated in FIGS. 1 and 3A, a third center line703 of the first extension portion 1751C extending in the seconddirection is located at the second side of the second center line 702 ofthe first main body portion 1751A extending in the second direction, thesecond side is opposite to the first side. Therefore, the first anodecan make the first extension portion avoid the light transmitting regionof the display substrate as much as possible, thereby improving thelight transmittance of the display substrate.

In some examples, as illustrated in FIGS. 1 and 3A, the first extensionportion 1751C is located at the second side of the second center line702 of the first main body portion 1751A extending in the seconddirection. That is to say, the first extension portion 1751C is totallylocated at the second side of the second center line of the first mainbody portion 1751A extending in the second direction, so that theoverlapping area between the first extension portion and the lighttransmitting region of the display substrate can be further reduced, andthe light transmittance of the display substrate can be furtherimproved. In some examples, as illustrated in FIG. 1, the size of thefirst connection portion 1751B in the first direction is smaller thanthe size of the first main body portion 1751A in the first direction,and the size of the first extension portion 1751C in the first directionis smaller than the size of the first connection portion 1751B in thefirst direction, the first direction is perpendicular to the arrangementdirection of the first main body portion 1751A, the first connectionportion 1751B and the first extension portion 1751C. As illustrated inFIG. 1, the first anode 1751 and the second anode 1752 are arranged inthe second direction, the second direction is perpendicular to the firstdirection, and both the first direction and the second direction arelocated on a plane parallel to the base substrate 110. Therefore, thearea occupied by the first extension portion 1751C in the firstdirection is small, and the overlapping area between the first extensionportion and the light transmitting region of the pixel driving circuitcan be reduced, so that the light transmittance of the display substratecan be improved.

In some examples, as illustrated in FIGS. 1 and 3A, each anode group1750 further includes a third anode 1753 and a fourth anode 1754. Ineach anode group 1750, the first anode 1751 and the second anode 1752form an anode pair 1758. The third anode 1753, the anode pair 1758 andthe fourth anode 1754 are sequentially arranged in the first direction,and the first anode 1751 and the second anode 1752 are sequentiallyarranged in the second direction. That is, the first direction describedabove can be the arrangement direction of the third anode, the anodepair and the fourth anode.

For example, the first direction described above can be a row directionof sub-pixel arrangement in the display substrate, that is, theextending direction of a gate line. Of course, the embodiments of thepresent disclosure include but are not limited thereto, and the firstdirection described above can also be the column direction of sub-pixelarrangement, that is, an extending direction of the data line.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, thenotch region described above includes a first notch 451 located betweenthe first main body portion 1751A and the anode compensation portion1751E, the orthographic projection of the first notch 451 on the basesubstrate 110 includes a first edge 401 and a second edge 402 extendingin the second direction, the first edge 401 is connected to theorthographic projection of the first connection portion 1751B on thebase substrate 110, and the second edge 402 is at the connection lineP12 between the first point P1 and the second point P2. That is to say,the first anode 1751 has a notch between the first main body portion1751A and the anode compensation portion 1751E, and the region betweenthe first main body portion 1751A and the anode compensation portion1751E just corresponds to the light transmitting region of the pixeldriving circuit. Therefore, the display substrate can reduce theoverlapping area between the first anode and the light transmittingregion of the pixel driving circuit, thereby improving the lighttransmittance.

For example, the edge of the first notch 451 close to the first mainbody portion 1751A is connected to the first main body portion 1751A,and the edge of the first notch 451 away from the first main bodyportion 1751A is flush with the edge of the first connection portion1751B away from the first main body portion 1751A.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, thearea of the orthographic projection of the first notch 451 on the basesubstrate 110 is greater than 1/2 of the area of the orthographicprojection of the first connection portion 1751B on the base substrate110. In this case, the area of the first notch is larger, so that thedisplay substrate can greatly reduce the overlapping area of the firstanode and the light transmitting region of the pixel driving circuit,thereby improving the light transmittance.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, thenotch region described above further includes a second notch 452 locatedbetween the first notch 451 and the anode compensation portion 1751E,the orthographic projection of the second notch 452 on the basesubstrate 110 includes a fourth edge 404 and a fifth edge 405 extendingin the second direction, the fourth edge 404 is connected to theorthographic projection of the first extension portion 1751C on the basesubstrate 110, and the fifth edge 405 is also on the connection line P12between the first point P1 and the second point P2. That is to say, thefirst extension portion of the first anode shrinks inward by a certaindistance relative to the edge of the first main body portion, so thatthe first anode can avoid the light transmitting region of thecorresponding pixel driving circuit as much as possible, therebyincreasing the light transmittance of the display substrate.

For example, the first notch 451 further includes an edge connected tothe anode compensation portion 1751E, an edge connected to the secondextension portion 1751D, and an edge connected to the second notch 452.in this case, the first notch 451 and the second notch 452 describedabove can form the notch region 450 described above.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, thearea of the orthographic projection of the second notch 452 on the basesubstrate 110 is greater than 1/2 of the area of the orthographicprojection of the first connection portion 1751B on the base substrate110. In this case, the area of the second notch is larger, so that theoverlapping area of the first anode and the light transmitting region ofthe pixel driving circuit can be greatly reduced, and the lighttransmittance can be improved.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, thesecond anode 1752 includes a second main body portion 1752A and a secondconnection portion 1752B, the second connection portion 1752B iselectrically connected to a pixel driving circuit 215 corresponding tothe second anode 1752, an orthographic projection of the second mainbody portion 1752A on the base substrate 110 covers the first node N1 ofthe pixel driving circuit 215 electrically connected to the secondconnection portion 1752B. In this case, because the orthographicprojection of the anode compensation portion 1751E on the base substrate110 covers the first node N1 of the pixel driving circuit 215 connectedto the first connection portion 1751B, both the first anode and thesecond anode cover the first node of the corresponding pixel drivingcircuit, so that the loads of both are the same, and thus the displayquality can be improved.

In some examples, as illustrated in FIG. 1, FIG. 3A and FIG. 3B, thefirst connection portion 1751B and the second connection portion 1752Bare symmetrically arranged about a symmetry axis parallel to the firstdirection. The first main body portion 1751A and the second main bodyportion 1752A can also be arranged symmetrically about the symmetryaxis. The first connection portion 1751B is at the side of the firstmain body portion 1751A away from the second main body portion 1752A,and the second connection portion 1752B is at the side of the secondmain body portion 1752A away from the first main body portion 1751A.

In some examples, as illustrated in FIGS. 1 and 2, each pixel drivingcircuit 215 further includes a storage capacitor Cst and alight-emitting control line 133, the storage capacitor Cst includes afirst electrode plate CE1 and a second electrode plate CE2 arranged in adirection perpendicular to the base substrate 110. The first main bodyportion 1751A is located at the side of the light-emitting control line133 in the pixel driving circuit 215 connected to the first connectionportion 1751B away from the storage capacitor Cst, and the anodecompensation portion 1751E is located at the side of the light-emittingcontrol line 133 away from the first main body portion 1751A.

In some examples, as illustrated in FIGS. 1 and 2, each pixel drivingcircuit 215 further includes a data line 152 and a power line 151. Ineach pixel driving circuit 215, the orthographic projection of thesecond electrode plate CE2 on the base substrate 110, the orthographicprojection of the light-emitting control line 133 on the base substrate110, the data line 152 and the power supply line 151 enclose a firstinterval region 610, and the area of the first interval region 610covered by the orthographic projection of the first extension portion1751C on the base substrate 110 is smaller than ½ of the total area ofthe first interval region 610. In this display substrate, the firstinterval region between the second electrode plate and thelight-emitting control line is usually a light transmitting region,because the area of the first interval region covered by theorthographic projection of the first extension portion on the basesubstrate is smaller than ½ of the total area of the first intervalregion, the display substrate can effectively reduce the overlappingarea of the first anode and the light transmitting region of thecorresponding pixel driving circuit, thereby improving the lighttransmittance of the display substrate.

For example, the area of the first interval region 610 covered by theorthographic projection of the first extension portion 1751C on the basesubstrate 110 can also be smaller than ⅓ of the total area of the firstinterval region 610.

In some examples, as illustrated in FIGS. 1 and 2, each of the pluralityof pixel driving circuits 215 further includes an initialization signalline 141, the orthographic projection of the light-emitting control line133 in the pixel driving circuit 215 corresponding to the first anode1751 on the base substrate 110, the orthographic projection of theinitialization signal line 141 in the pixel driving circuit 215corresponding to the second anode 1752 on the base substrate 110, thedata line 152 and the power line 151 enclose a second interval region620, and the area of the second interval region 620 covered by theorthographic projection of the first anode 1751 on the base substrate110 is smaller than ⅔ of the total area of the second interval region620. In this display substrate, the second interval region is usually alight transmitting region, because the area of the second intervalregion covered by the orthographic projection of the first anode on thebase substrate is smaller than ⅔ of the total area of the secondinterval region, the display substrate can effectively reduce theoverlapping area of the first anode and the light transmitting region ofthe corresponding pixel driving circuit, thereby improving the lighttransmittance of the display substrate.

For example, the area of the second interval region 620 covered by theorthographic projection of the first anode 1751 on the base substrate110 is smaller than ½ of the total area of the second interval region620.

In some examples, as illustrated in FIG. 2, the display substrate 100further includes a pixel defining layer 190 and a light-emitting layer180. The pixel defining layer 190 is located at the side of the anodelayer 170 away from the base substrate 110, and the light-emitting layer180 is located at the side of the anode layer 170 away from the basesubstrate 110. The pixel defining layer 190 includes a plurality ofopenings 195, the plurality of openings 195 are arranged in one-to-onecorrespondence with the plurality of anodes 175, and each of theplurality of openings 195 partially exposes a corresponding anode 175 inthe plurality of anodes 175. The light-emitting layer 180 includes aplurality of light-emitting portions 185, the plurality oflight-emitting portions 185 are arranged in one-to-one correspondencewith the plurality of openings 195, and at least a part of each of theplurality of light-emitting portion 185 is located in a correspondingopening 195 in the plurality of openings 195 and covers the exposed partof a corresponding anode 175 in the plurality of anodes 175.

In some examples, as illustrated in FIG. 3, the plurality of openings195 are divided into a plurality of opening groups 1950, each of theplurality of opening groups 1950 includes a first opening 1951 and asecond opening 1952, and the plurality of light-emitting portions 185are divided into a plurality of light-emitting portion groups 1850, eachof the plurality of light-emitting portion groups 1850 includes a firstlight-emitting portion 1851 and a second light-emitting portion 1852.The orthographic projection of the first opening 1951 on the basesubstrate 110 falls within the orthographic projection of the first mainbody portion 1751A on the base substrate 110, at least a part of thefirst light-emitting portion 1851 is located in the first opening 1951and covers the exposed part of the first main body 1751A, and the shapeof the orthographic projection of the first main body portion 1751A onthe base substrate 110 is similar to the shape of the orthographicprojection of the first opening 1951 on the base substrate 110.

For example, as illustrated in FIG. 3, at least a part of the secondlight-emitting portion 1852 is located in the second opening 1952 andcovers the exposed part of the second main body portion 1752A, and theshape of the orthographic projection of the second main body portion1752A on the base substrate 110 is similar to the shape of theorthographic projection of the second opening 1952 on the base substrate110.

For example, as illustrated in FIG. 3, at least a part of the thirdlight-emitting portion 1853 is located in the third opening 1953 andcovers the exposed part of the third main body portion 1753A, and theshape of the orthographic projection of the third main body portion1753A on the base substrate 110 is similar to the shape of theorthographic projection of the third opening 1953 on the base substrate110.

For example, as illustrated in FIG. 3, at least a part of the fourthlight-emitting portion 1854 is located in the fourth opening 1954 andcovers the exposed part of the fourth main body portion 1754A, and theshape of the orthographic projection of the fourth main body portion1754A on the base substrate 110 is similar to the shape of theorthographic projection of the fourth opening 1954 on the base substrate110.

For example, the first light-emitting portion and the secondlight-emitting portion are configured to emit light of the same color.

For example, the first light-emitting portion is configured to emitgreen light, the third light-emitting portion is configured to emit redlight, and the fourth light-emitting portion is configured to emit bluelight. Of course, embodiments of the present disclosure include but arenot limited thereto.

In some examples, as illustrated in FIG. 3, the pixel circuit layer 210includes a semiconductor layer 120 and a first gate electrode layer 130.The semiconductor layer 120 is located on the base substrate 110, andthe first gate electrode layer 130 is located at a side of thesemiconductor layer 120 away from the base substrate 110.

FIGS. 4A-4D are schematic plan views of each functional film layer in adisplay substrate according to an embodiment of the present disclosure.FIG. 5 is an equivalent circuit diagram of a pixel driving circuit in adisplay substrate according to an embodiment of the present disclosure.

As illustrated in FIG. 4A and FIG. 5, the semiconductor layer 120includes a plurality of pixel driving units 125 arranged in one-to-onecorrespondence with the plurality of anodes 175. Each pixel driving unit125 includes a first unit 1251, a second unit 1252, a third unit 1253, afourth unit 1254, a fifth unit 1255, a sixth unit 1256 and a seventhunit 1257. The first unit 1251 includes a first channel region C1, and afirst source region S1 and a first drain region D1 located at the twosides of the first channel region C1. The second unit 1252 includes asecond channel region C2, a second source region S2 and a second drainregion D2 on the two sides of the second channel region C2. The thirdunit 1253 includes a third channel region C3, a third source region S3and a third drain region D3 at the two sides of the third channel regionC3. The fourth unit 1254 includes a fourth channel region C4, and afourth source region S4 and a fourth drain region D4 at the two sides ofthe fourth channel region C4. The fifth unit 1255 includes a fifthchannel region C5, and a fifth source region S5 and a fifth drain regionD5 located at the two sides of the fifth channel region C5. The sixthunit 1256 includes a sixth channel region C6, and a sixth source regionS6 and a sixth drain region D6 located at the two sides of the sixthchannel region C6. The seventh unit 1257 includes a seventh channelregion C7, and a seventh source region S7 and a seventh drain region D7located at the two sides of the seventh channel region C7.

For example, as illustrated in FIGS. 4A and 5, the third source regionS3, the first drain region D1 and the fifth source region S5 areconnected to the first node N1, the sixth drain region S6 is connectedto the third drain region D3, the first source region S1, the seconddrain region D2 and the fourth drain region D4 are connected to thesecond node N2, and the fifth drain region D5 is connected to theseventh drain region D7.

For example, as illustrated in FIG. 4B and FIG. 5, the first gateelectrode layer 130 includes a reset signal line 131, a gate line 132, afirst electrode CE1 and the light-emitting control line 133. The resetsignal line 131 overlaps with the seventh channel region C7 and thesixth channel region C6 to form a seventh thin film transistor T7 and asixth thin film transistor T6 with the seventh unit 1257 and the sixthunit 1256. The gate line 132 respectively overlaps with the thirdchannel region C3 and the second channel region C2 to form a third thinfilm transistor T3 and a second thin film transistor T2 with the thirdunit 1253 and the second unit 1252. The first electrode block CE1overlaps with the first channel region C1 to form a first thin filmtransistor T1 with the first unit 1251. The light-emitting control line133 overlaps with the fourth channel region C4 and the fifth channelregion C5 to form a fourth thin film transistor T4 and a fifth thin filmtransistor T5 with the fourth unit 1254 and the fifth unit 1255. Thefirst thin film transistor T1 is the driving thin film transistor, andthe third thin film transistor T3 is the compensation thin filmtransistor.

In some examples, the reset signal line, the gate line and thelight-emitting control line all extend in the first direction, and thereset signal line, the gate line, the first electrode block and thelight-emitting control line are arranged in the second direction.

As illustrated in FIGS. 4C and 5, the pixel circuit layer 210 includes asecond gate electrode layer 140 located at the side of the first gateelectrode layer 130 away from the semiconductor layer 120. The secondgate electrode layer 140 includes an initialization signal line 141 anda second electrode block CE2. The initialization signal line 141 isconnected to the seventh source region S7 and the sixth source regionS6. The orthographic projection of the second electrode block CE2 on thebase substrate 110 at least partially overlaps with the orthographicprojection of the first electrode block CE1 on the base substrate 110 toform a storage capacitor Cst.

As illustrated in FIGS. 4C and 5, the second gate electrode layer 140further includes a conductive block 142. For example, the conductiveblock 142 can be connected to the power line, thereby reducing theresistance of the power line. For another example, the orthographicprojection of the conductive block 142 on the base substrate 110 atleast partially overlaps with the channel region of the compensationthin film transistor T3, thereby preventing light from directlyirradiating the channel region of the compensation thin film transistorT3 and improving the stability of the compensation thin film transistorT3.

As illustrated in FIG. 4D and FIG. 5, the pixel circuit layer 210further includes a source-drain electrode layer 150 located at the sideof the second gate electrode layer 140 away from the first gateelectrode layer 130. The source-drain electrode layer 150 includes adata line 152 and a power line 151. The second source region S2 isconnected to the data line 152, and the fourth source region S4 isconnected to the power line 151.

As illustrated in FIGS. 4D and 5, the source-drain electrode layer 210further includes a first connection block 1541, a second connectionblock 1542 and a third connection block 1543. The first connection block1541 is used to connect the initialization signal line 141 with thesixth source region S6 and the seventh source region S7. The secondconnection block 1542 is used to connect the third drain region D3 withthe first electrode block CE1. The third connection block 1543 isconnected to the fifth drain region D5, and can be used as a drainelectrode to be connected to the corresponding anode.

As illustrated in FIG. 4D and FIG. 5, the second connection block 1542includes a first end 1542A and a second end 1542B, the first end 1542Ais connected to the drain region D3 of the compensation thin filmtransistor T3, and the second end 1542B is connected to the firstelectrode block CE1. The orthographic projection of the anodecompensation portion 1751E on the base substrate 110 covers theorthographic projection of the second end 1542B on the base substrate110.

As illustrated in FIG. 5, the second source region S2 is connected tothe data line 152. The fourth source region S4 is connected to the powerline 151. Therefore, the first unit 121, the second unit 122, the thirdunit 123, the fourth unit 124, the fifth unit 125, the sixth unit 126and the seventh unit 127 of the semiconductor layer 120 can form thefirst thin film transistor T1, the second thin film transistor T2, thethird thin film transistor T3, the fourth thin film transistor T4, thefifth thin film transistor T5, the sixth thin film transistor T6 and theseventh thin film transistor T7 with the reset signal line 131 and thegate line 132 described above.

Hereinafter, an operation mode of the pixel driving circuit illustratedin FIG. 5 will be schematically described. First, when a reset signal istransmitted to the reset signal line 131 and the seventh thin filmtransistor T7 is turned on, the residual current flowing through theanode of each sub-pixel is discharged to the sixth thin film transistorT6 through the seventh thin film transistor T7, so that light emissioncaused by the residual current flowing through the anode of eachsub-pixel can be suppressed. Then, when a reset signal is transmitted tothe reset signal line 131 and an initialization signal is transmitted tothe initialization signal line 141, the sixth thin film transistor T6 isturned on, and an initialization voltage Vint is applied to the firstgate electrode of the first thin film transistor T1 and the firstelectrode block CE1 of the storage capacitor Cst through the sixth thinfilm transistor T6, so that the first gate electrode and the storagecapacitor Cst are initialized. The first gate electrode initializationcan turn on the first thin film transistor T1.

Then, when a gate signal is transmitted to the gate line 132 and a datasignal is transmitted to the data line 152, both the second thin filmtransistor T2 and the third thin film transistor T3 are turned on, and adata voltage Vd is applied to the first gate electrode through thesecond thin film transistor T2 and the third thin film transistor T3. Atthis time, the voltage applied to the first gate electrode is acompensation voltage Vd+Vth, and the compensation voltage applied to thefirst gate electrode is also applied to the first electrode block CE1 ofthe storage capacitor Cst.

Subsequently, the power line 151 applies a driving voltage Vel to thesecond electrode block CE2 of the storage capacitor Cst, and applies thecompensation voltage Vd+Vth to the first electrode block CE1, so thatcharges corresponding to differences between voltages respectivelyapplied to the two electrodes of the storage capacitor Cst are stored inthe storage capacitor Cst, and the first thin film transistor T1 isturned on for a predetermined time.

Subsequently, when an emission control signal is applied to thelight-emitting control line 133, both the fourth thin film transistor T4and the fifth thin film transistor T5 are turned on, so that the fourththin film transistor T4 applies a driving voltage Vel to the fifth thinfilm transistor T5. When the driving voltage Vel passes through thefirst thin film transistor T1 turned on by the storage capacitor Cst,the difference between the corresponding driving voltage Vel and thevoltage applied to the first gate electrode through the storagecapacitor Cst causes a driving current Id to flow through the firstdrain region D3 of the first thin film transistor T1, and the drivingcurrent Id is applied to each sub-pixel through the fifth thin filmtransistor T5, so that the light-emitting layer of each sub-pixel emitslight.

FIG. 6 is a schematic plan view of another display substrate accordingto an embodiment of the present disclosure. As illustrated in FIG. 6,the second anode 1752 further includes a first supplementary portion1752C, the first supplementary portion 1752C is protruded from thesecond main body portion 1752A in the direction the second main bodyportion 1752A close to the first anode 1751, and the orthographicprojection of the first supplementary portion 1752C on the basesubstrate 110 at least partially overlaps with the orthographicprojection of the channel region of the compensation thin filmtransistor T3 in the pixel driving circuit 215 electrically connected tothe second connection portion 1752B on the base substrate 110.

In the display substrate provided in this example, the pixel drivingcircuit adopts a 7T1C pixel driving structure, and in the light-emittingstage, the stability of the driving thin film transistor T1 directlyaffects the long-term light-emitting stability of the organiclight-emitting diode display device. In the charging stage, the chargingvoltage on the gate electrode of the driving thin film transistor T1 isrelated to the state of the compensation thin film transistor T3.Generally, thin film transistors are very sensitive to light, and whenthe thin film transistors (especially the channel region) are exposed tolight, the characteristics of the thin film transistors will drifteasily, which will affect the normal operation of the pixel drivingcircuit. The first supplementary portion is added on the second anode ofthe display substrate, and the orthographic projection of the firstsupplementary portion on the base substrate at least partially overlapswith the orthographic projection of the channel region of thecompensation thin film transistor in the pixel driving circuitelectrically connected to the second connection portion, so that thedisplay substrate can shield the channel region of the correspondingcompensation thin film transistor through the first supplementaryportion, thereby improving the stability and service life of thecompensation thin film transistor and further improving the long-termlight-emitting stability and service life of the display substrate.

It should be noted that when the compensation thin film transistor T3has a double gate structure, the channel region of the abovecompensation thin film transistor T3 includes two channel regions and acommon electrode between the two channel regions. For example, asillustrated in FIG. 2, the compensation thin film transistor T3 can be athin film transistor with a double gate structure, so that thereliability of the compensation thin film transistor can be improved.The channel region of the compensation thin film transistor T3 includesa first channel region C31 and a second channel region C32 arranged atintervals, and the compensation thin film transistor T3 further includesa common electrode SE located between the first channel region C31 andthe second channel region C32. The orthographic projection of the commonelectrode SE of the compensation thin film transistor T3 on the basesubstrate 110 at least partially overlaps with the first supplementaryportion 1742C. Therefore, the first supplementary portion can partiallyor completely shield the common electrode SE of the compensation thinfilm transistor T3, thereby further improving the stability and servicelife of the compensation thin film transistor, and further improving thelong-term light-emitting stability and service life of the displaysubstrate.

In some examples, as illustrated in FIGS. 1 and 6, the third anode 1753includes a third main body portion 1753A and a third connection portion1753B, and the third connection portion 1753B is electrically connectedto the pixel driving circuit 215 corresponding to the third anode 1753.The fourth anode 1754 includes a fourth main body portion 1754A and afourth connection portion 1754B, and the fourth connection portion 1754Bis electrically connected to the pixel driving circuit 215 correspondingto the fourth anode 1754.

In some examples, as illustrated in FIG. 6, the fourth anode 1754further includes a second supplementary portion 1754C protruding fromthe fourth main body portion 1754A in a direction the fourth main bodyportion 1754A close to the second anode 1752. For example, the secondsupplementary portion 1754C is located at the side of the fourthconnection portion 1754B close to the fourth main body portion 1754A inthe second direction. The orthographic projection of the secondsupplementary portion 1754C on the base substrate 110 at least partiallyoverlaps with the orthographic projection of the channel region of thecompensation thin film transistor T3 in the pixel driving circuit 215electrically connected to the third connection portion 1753B on the basesubstrate 110. Therefore, the display substrate can shield the channelregion of the compensation thin film transistor corresponding to thethird anode through the second supplementary portion, thereby improvingthe stability and service life of the compensation thin film transistorand further improving the long-term light-emitting stability and servicelife of the display substrate. Similarly, when the compensation thinfilm transistor T3 has a double gate structure, the channel region ofthe compensation thin film transistor T3 includes two channel regionsand a common electrode between the two channel regions.

In some examples, as illustrated in FIG. 6, the fourth anode 1754further includes a third supplementary portion 1754D protruding from thefourth main body portion 1754A in a direction the fourth main bodyportion 1754A away from the second anode 1752, and the orthographicprojection of the third supplementary portion 1754D on the basesubstrate 110 at least partially overlaps with the orthographicprojection of the channel region of the compensation thin filmtransistor T3 in the pixel driving circuit 215 electrically connected tothe first connection portion 1751B on the base substrate 110. Therefore,the display substrate can shield the channel region of the compensationthin film transistor corresponding to the first anode through the thirdsupplementary portion, thereby improving the stability and service lifeof the compensation thin film transistor and further improving thelong-term light-emitting stability and service life of the displaysubstrate. Similarly, when the compensation thin film transistor T3 hasa double gate structure, the channel region of the compensation thinfilm transistor T3 includes two channel regions and a common electrodebetween the two channel regions.

At least one embodiment of the present disclosure further provides adisplay device. FIG. 7 is a schematic diagram of a display deviceaccording to an embodiment of the present disclosure. As illustrated inFIG. 7, the display device 800 includes the display substrate 100 of anyone of the above. Therefore, the display device has beneficial effectscorresponding to the beneficial effects of the display substrate, forexample, the display device has higher light transmittance. In addition,the display device can improve the stability and service life of thecompensation thin film transistor, thereby improving the long-termlight-emitting stability and service life of the display substrate.

For example, the display device can be electronic products with displayfunctions such as televisions, computers, notebook computers, flatcomputers, mobile phones, navigators, and electronic photo frames, etc.

The following statements need to be explained:

(1) In the drawings of the embodiments of the present disclosure, onlythe structures related to the embodiments of the present disclosure areinvolved, and other structures may refer to the common design(s).

(2) In case of no conflict, features in one embodiment or in differentembodiments of the present disclosure can be combined.

The above are merely exemplary embodiments of the present disclosure butare not limitative to the scope of the present disclosure; the scopes ofthe present disclosure should be defined in the appended claims.

1. A display substrate, comprising: a base substrate; a pixel circuitlayer, on the base substrate; an anode layer, at a side of the pixelcircuit layer away from the base substrate, wherein the pixel circuitlayer comprises a plurality of pixel driving circuits, the anode layercomprises a plurality of anodes, and the plurality of pixel drivingcircuits are arranged in one-to-one correspondence with the plurality ofanodes, the plurality of anodes comprise a plurality of anode groupsarranged in an array along a first direction and a second direction,each of the plurality of anode groups comprises a first anode and asecond anode which are oppositely arranged in the second direction, thefirst anode comprises a first main body portion and a first connectionportion, and the first connection portion is electrically connected to apixel driving circuit corresponding to the first anode, the first anodefurther comprises an extension portion and an anode compensationportion, wherein an orthographic projection of the anode compensationportion on the base substrate covers one thin film transistor in thepixel driving circuit connected to the first connection portion, thefirst main body portion and the anode compensation portion at leastpartially overlap in the first direction, a first center line of theanode compensation portion extending in the second direction is at afirst side of a second center line of the first main body portionextending in the second direction, the anode compensation portion has afirst point at a side away from the second center line, and the firstmain body portion has a second point at the first side, the first anodeand a connection line between the first point and the second pointenclose a notch region, and an area of the notch region is greater thanat least one of an area of the anode compensation portion and an area ofthe first connection portion.
 2. The display substrate according toclaim 1, wherein the area of the notch region is greater than a sum ofthe area of the anode compensation portion and the area of the firstconnection portion.
 3. The display substrate according to claim 1,wherein the anode compensation portion is at the first side of thesecond center line extending in the second direction of the first mainbody portion extending in the second direction.
 4. The display substrateaccording to claim 1, wherein the extension portion comprises a firstextension portion and a second extension portion, the first extensionportion is at a side of the first connection portion away from the firstmain body portion, the second extension portion is respectivelyconnected to the first extension portion and the anode compensationportion, and the first extension portion is at a side of the secondextension portion away from the anode compensation portion.
 5. Thedisplay substrate according to claim 4, wherein a third center line ofthe first extension portion extending in the second direction is at asecond side of the second center line of the first main body portionextending in the second direction, and the second side is opposite tothe first side.
 6. The display substrate according to claim 5, whereinthe first extension portion is at the second side of the second centerline of the first main body portion extending in the second direction.7. The display substrate according to claim 1, wherein an orthographicprojection of the notch region on the base substrate does not overlapwith an orthographic projection of the first anode on the basesubstrate.
 8. The display substrate according to claim 1, wherein afourth center line of the first connection portion extending in thesecond direction is at the first side of the second center line of thefirst main body portion.
 9. The display substrate according to claim 1,wherein each of the plurality of pixel driving circuits comprises adriving thin film transistor and a compensation thin film transistor, adrain electrode of the driving thin film transistor and a sourceelectrode of the compensation thin film transistor are connected to afirst node, an orthographic projection of the anode compensation portionon the base substrate covers the first node of a pixel driving circuitconnected to the first connection portion.
 10. The display substrateaccording to claim 4, wherein a size of the first connection portion inthe first direction is smaller than a size of the first main bodyportion in the first direction, and a size of the first extensionportion in the first direction is smaller than a size of the firstconnection portion in the first direction.
 11. The display substrateaccording to claim 10, wherein each of the plurality of anode groupsfurther comprises a third anode and a fourth anode; in each of theplurality of anode groups, the first anode and the second anode form ananode pair, the third anode, the anode pair and the fourth anode arearranged in sequence in the first direction, and the first anode and thesecond anode are arranged in sequence in the second direction, the notchregion comprises a first notch between the first main body portion andthe anode compensation portion, an orthographic projection of the firstnotch on the base substrate comprises a first edge and a second edgeextending in the second direction, the first edge is connected to anorthographic projection of the first connection portion on the basesubstrate, and the second edge is on a connection line between the firstpoint and the second point.
 12. (canceled)
 13. The display substrateaccording to claim 11, wherein an area of the orthographic projection ofthe first notch on the base substrate is greater than ½ of an area ofthe orthographic projection of the first connection portion on the basesubstrate.
 14. The display substrate according to claim 11, wherein thenotch region further comprises a second notch between the first notchand the anode compensation portion, an orthographic projection of thesecond notch on the base substrate comprises a fourth edge and a fifthedge extending in the second direction, the fourth edge is connected toan orthographic projection of the first extension portion on the basesubstrate, and the fifth edge is also on the connection line between thefirst point and the second point.
 15. The display substrate according toclaim 14, wherein an area of the orthographic projection of the secondnotch on the base substrate is greater than ½ of an area of theorthographic projection of the first connection portion on the basesubstrate.
 16. The display substrate according to claim 1, wherein thesecond anode comprises a second main body portion and a secondconnection portion, the second main body portion is electricallyconnected to a pixel driving circuit corresponding to the second anode,and an orthographic projection of the second main body portion on thebase substrate covers a first node of the pixel driving circuitelectrically connected to the second connection portion, the firstconnection portion and the second connection portion are symmetricallyarranged about a symmetry axis parallel to the first direction, whereinthe first connection portion is at a side of the first main body portionaway from the second main body portion, and the second connectionportion is at a side of the second main body portion away from the firstmain body portion.
 17. The display substrate according to claim 16,wherein the second anode further comprises a first supplementaryportion, the first supplementary portion is protruded from the secondmain body portion in a direction the second main body portion close tothe first anode, an orthographic projection of the first supplementaryportion on the base substrate at least partially overlaps with anorthographic projection of a channel region of the compensation thinfilm transistor in the pixel driving circuit electrically connected tothe second connection portion on the base substrate.
 18. The displaysubstrate according to claim 4, wherein each of the plurality of pixeldriving circuits further comprises a storage capacitor and alight-emitting control line, the storage capacitor comprises a firstelectrode plate and a second electrode plate arranged in a directionperpendicular to the base substrate, the first main body portion is at aside of the light-emitting control line in the pixel driving circuitconnected to the first connection portion away from the storagecapacitor, and the anode compensation portion is at a side of thelight-emitting control line away from the first main body portion. 19.The display substrate according to claim 18, wherein each of theplurality of pixel driving circuits further comprises a data line and apower line, in each of the plurality of pixel driving circuits, anorthographic projection of the second electrode plate on the basesubstrate, an orthographic projection of the light-emitting control lineon the base substrate, the data line and the power line enclose a firstinterval region, and an area of the first interval region covered by anorthographic projection of the first extension portion on the basesubstrate is smaller than ½ of a total area of the first intervalregion.
 20. The display substrate according to claim 19, wherein each ofthe plurality of pixel driving circuits further comprises aninitialization signal line, an orthographic projection of thelight-emitting control line in a pixel driving circuit corresponding tothe first anode on the base substrate, an orthographic projection of theinitialization signal line in a pixel driving circuit corresponding tothe second anode on the base substrate, the data line and the power lineenclose a second interval region, and an area of the second intervalregion covered by an orthographic projection of the first anode on thebase substrate is smaller than ⅔ of a total area of the second intervalregion. 21-30. (canceled)
 31. A display device comprising the displaysubstrate according to claim 1.